John Leung, MD is the director of the Food Allergy Center at Tufts Medical Center and Floating Hospital for Children. He attended medical school at University of Michigan Medical School and completed his internal medicine residency at University of Iowa Hospitals and Clinics. He then finished a Gastroenterology fellowship at Tufts Medical Center. He worked as a gastroenterology consultant at Tufts Medical Center for a year before completing an Allergy/Immunology clinical and research fellowship at Massachusetts General Hospital/Harvard Medical School. His clinical and research focus are on eosinophilic esophagitis and food allergy. He has coauthored more than 40 peer-reviewed manuscripts, scientific abstracts, book chapters, and online tutorials.

Phi Kappa Phi Honor Society
Tau Beta Pi Honor Engineering Society
Golden Key National Honor Society
OXE Chemical Engineering Honor Society
American Institution of Chemical Engineering Association
American Medical Association
American Family Physicians
American College of Physicians
United Asian American Medical Student Association
American Association of Immunologists
American Gastroenterological Association
American College of Gastroenterology
The Massachusetts Medical Society
New England Endoscopy Society
Society for Mucosal Immunology
American Academy of Allergy Asthma and Immunology
American College of Allergy, Asthma and Immunology